English model Jean Shrimpton wore a controversially short minidress to Derby Day at Flemington Racecourse in Melbourne, Australia – a pivotal moment of the introduction of the miniskirt to women's fashion.

Jean Rosemary Shrimpton is an English model and actress. She was an icon of Swinging London and is considered to be one of the world's first supermodels. She appeared on numerous magazine covers including Vogue, Harper's Bazaar, Vanity Fair, Glamour, Elle, Ladies' Home Journal, Newsweek, and Time. In 2009, Harper's Bazaar named Shrimpton one of the 26 best models of all time, and in 2012, Time named her one of the 100 most influential fashion icons since 1923. She starred alongside Paul Jones in the film Privilege (1967).

On 1965 Derby Day at Flemington Racecourse in Melbourne, Australia, English model Jean Shrimpton wore a white minidress that sparked controversy and was later described as a pivotal moment in women's fashion. The dress was made by Shrimpton's dressmaker, Colin Rolfe, and its hem was 4 in (10 cm) above the knee because he had not been supplied with enough fabric to complete their intended design.

The Victoria Derby, also known as the Penfolds Victoria Derby, is a Victoria Racing Club Group 1 Thoroughbred horse race for three-year-olds held under Set Weights conditions over a distance of 2,500 metres at Flemington Racecourse, in Melbourne, Australia scheduled annually on the first day of the Melbourne Cup Carnival. Total prize money for the race is A$2,000,000.

Flemington Racecourse is a major horse racing venue located in Melbourne, Victoria, Australia. It is most notable for hosting the Melbourne Cup, which is the world's richest handicap and the world's richest 3200-metre horse race. The racecourse is situated on low alluvial flats, next to the Maribyrnong River. The area was first used for horse racing in March 1840.